Leviticus 3:3 “And the priest shall look on the plague in the skin of the flesh: and when the hair in the plague is turned white, and the plague in sight be deeper than the skin of his flesh, it is a plague of leprosy: and the priest shall look on him, and pronounce him unclean.”
The plague of leprosy was a dreaded disease. It was pretty much a death sentence when you got the plague of leprosy. If you thought you had this plague, you would have to go to the priest who would look at what might be leprosy, and he would make a judgment as to whether or not it was leprosy. If it was leprosy, he would look at you and pronounce you unclean. Once you were unclean, you would have to go without the city, and when any traveler would come near, you would have to cry, “Unclean.” This warned the traveler that you had this dreaded disease and that they were to stay away from you.
Leprosy is a type of sin. Just like leprosy, sin will slowly eat away your spirituality until spiritual character traits slowly drop off. If every believer treated sin like leprosy, we would never have people being destroyed by sin. Sadly, many believers treat sin like candy instead of like leprosy, and that is why so many succumb to sin’s destruction. God warning about leprosy and pronouncing those who had it as unclean teaches several lessons about sin and those who commit sin.
First, you must make judgments in life. You need to know whether something is or is not a sin. You will never know what sin is without reading God’s Word or yielding to the Holy Spirit. Playing ignorance with sin is like playing ignorance with poison in a glass of water; it won't matter if you say it is poison or not; if you drink the water, it will kill you. Likewise, you can play ignorance to sin and act like you didn't know it, but sin will still cause destruction to anyone’s life. It does not mean that just because you say you are under grace that sin’s consequences are negated. Grace is to help you to obey God; it is not to keep you from obeying Him. If you want to keep from sin destroying your life, you are going to have to make judgments about whether or not something is sin.
Second, you must make judgments about whether or not someone is doing wrong. I know this is not popular to say, but you have to make judgments so that you are not exposed to their sin. If the priest didn't make the judgment about the person with leprosy, many others would have been infected with this deadly disease. Likewise, you must make judgments about whether people are doing right or wrong so that you don't become “infected” with their sin.
Third, you must separate from those who are living in sin. The reason you must make a judgment is because you need to separate from them so that they don't influence you to do wrong. Separation is not to make you better than others, but it is to keep you from going down the same destructive path that others are taking with their sin and compromise. You can avoid separating from those who are compromising or are living in sin, but you will become like them as you spend time with them.
My friend, pronouncing sin as unclean doesn't make you better than anyone else, but it does keep you from destroying your life in sin. Don't be afraid of making judgments; making the right judgment may just save your life from destruction, or it may save the lives of those you influence from going down that destructive path of sin.